Blacktail triplefin
# Blacktail triplefin

Blacktail triplefin is a common name for several species of fish in the threefin blenny family (Tripterygiidae) and may refer to:

* Enneapterygius bahasa, also known as the blacktail threefin, a species of threefin blenny known from reefs in the western Pacific Ocean
* Enneapterygius nigricauda, a species of triplefin blenny
* Enneapterygius similis, also known as black and red triplefin or masked threefin
* Helcogramma aquila
